Vintage Magnetic Clutch Selection Guide Slide Chart 1964 Vickers SPERRY RAND Co

Description

here is a vintage 1964 "VICKERS MAGNECLUTCH / MAGNEBRAKE" Selection Guide cardboard Slide Chart for proper selection of magnetic clutches. This vintage Vickers Division of SPERRY RAND Corp. Electric Products Division slide chart explains the formula and how to use the chart with proper calculations appearing in windows for HORSEPOWER, RPM, TORQUE, SLIP WATTS, RPM DIFFERENCE, TOTAL CYCLE TIME,SLIP WATTS, EQUIVELENT SLIP WATTS, TIME ON for "AIR COOLED and WATER COOLED" Brakes and Clutches, has "INPUT RPM" window with RATED Slip Watt Dissipation Capacity, MAGNECLUTCH Specification Data and more, in nice vintage condition with minor wear to corners and edges and very light soiling to cardboard front and back. sold as is as found for the collector of this stuff. Not sure if this chart and formula works with modern day magnetic particle clutches and or different brands? you guys would know better than me. please view all pics and read full item condition. I ship within 24hrs of cleared payment.